中文摘要：

该文基于多波束测深和合成孔径技术原理,提出了多波束合成孔径声呐（Synthetic Aperture Sonar,SAS）的实现方案,设计了一种新型的多接收阵元阵列结构,有针对性地推导了相关数学模型,并仿真实现了逐点成像算法。计算机仿真结果表明：相比于传统多波束测深声呐,新方案的方位向分辨率有了明显的提高;相比于常规合成孔径声呐,新方案能够得到更多的目标信息,且能改善成像效果。

英文摘要：

The paper proposes a scheme for the realization of multi-beam Synthetic Aperture Sonar（SAS） based on the multi-beam bathymetry and aperture synthetic principle,designs a new multiple receiver array structure,deduces correlated math model,and simulates the dot-by-dot imaging algorithm according to the array structure.Computer simulation results show that： compared with multi-beam bathymetry sonar,the new scheme can remarkably improve the along-track resolution,and compared with conventional SAS,the new scheme can get more information of the target and enhance the imaging quality.